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Current frequency conversion device

A technology of current frequency conversion and voltage conversion, applied in the direction of output power conversion device, DC power input conversion to DC power output, electrical components, etc., to achieve the effects of reducing development costs, convenient use, and reasonable structure

Pending Publication Date: 2022-01-04
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0034] Such as Figure 1-2 As shown, a current-frequency conversion device provided according to the present invention includes: a communication unit, a photoelectric isolation circuit, a drive circuit, an MCU control unit, a voltage stabilizing circuit, and an operational amplifier circuit unit; a voltage stabilizing circuit, an operational amplifier circuit unit, and an MCU The control unit is connected; the communication unit and the photoelectric isolation circuit are connected to the MCU control un...

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Abstract

The invention provides a current frequency conversion device. The current frequency conversion device comprises a communication unit, a photoelectric isolation circuit, a driving circuit, an MCU control unit, a voltage stabilizing circuit and an operational amplifier circuit unit, wherein the voltage stabilizing circuit and the operational amplifier circuit unit are connected with the MCU control unit, the communication unit and the photoelectric isolation circuit are connected with the MCU control unit, the communication unit is in cross connection with the MCU control unit and the operational amplifier circuit unit, the driving circuit is connected with the photoelectric isolation circuit, an current input signal is input to the operational amplifier circuit unit, the drive circuit is capable of outputting a frequency output signal. According to the invention, a hardware circuit and a program can be combined for use, some unnecessary circuit parts such as a control voltage generation circuit, a VCO oscillation circuit and the like can be omitted, a program part with adjustable output is replaced, and the device has the advantages of being real-time in response, suitable for high-frequency occasions and the like.

Description

technical field [0001] The present invention relates to the field of embedded technology, in particular to a current-frequency conversion device, in particular to a hardware circuit for current signal processing combined with an MCU program and a controllable frequency output that can be used to convert current into frequency in real time equipment. Background technique [0002] Current signal output is a commonly used signal output method for sensors. The current signal processing methods include current-voltage conversion and current-frequency conversion. The output current signal is introduced into the sampling resistor and converted into a voltage signal. The direct sampling of the resistor has poor anti-interference ability. The way to suppress interference is to use a current differential sampling circuit to eliminate common-mode interference. However, there is a phenomenon of zero point drift after current differential sampling, and the introduction of a potential co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/157H02M1/32
CPCH02M3/157H02M1/32
Inventor 顾懿周子添邝光宇
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
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